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Numerical Simulations of Random Phase Sine-Gordon Model and Renormalization Group Predictions

D. J. Lancaster, J. J. Ruiz-Lorenzo

cond-mat.dis-nnarXiv:cond-mat/0511439

Abstract

Numerical Simulations of the random phase sine-Gordon model suffer from strong finite size effects preventing the non-Gaussian 2 r component of the spatial correlator from following the universal infinite volume prediction. We show that a finite size prediction based on perturbative Renormalisation Group (RG) arguments agrees well with new high precision simulations for small coupling and close to the critical temperature.

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